[PATCH 2/6] Drivers: hv: hv_balloon: keep locks balanced on add_memory() failure

[Vitaly Kuznetsov]

Olaf Hering <olaf at aepfle.de> writes:

> On Wed, Mar 11, K. Y. Srinivasan wrote:
>
>> +++ b/drivers/hv/hv_balloon.c
>> @@ -652,6 +652,7 @@ static void hv_mem_hot_add(unsigned long start, unsigned long size,
>>  			}
>>  			has->ha_end_pfn -= HA_CHUNK;
>>  			has->covered_end_pfn -=  processed_pfn;
>> +			mutex_lock(&dm_device.ha_region_mutex);
>>  			break;
>>  		}
>
> Should it call the wrapper instead of doing mutex_lock directly?
> Like 'acquire_region_mutex(false);'.

My "Drivers: hv: hv_balloon: eliminate the trylock path in
acquire/release_region_mutex" (b05d8d9ef5ef21d1b18440430f950304836e1aaa
in char-misc-next) removed these wrappers.

>
> Olaf

-- 
  Vitaly